EARNINGS PER SHARE, Basic and Diluted Net Loss per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income for basic and diluted earnings per common share	$ 8,977	$ 5,688
Shares:
Weighted-average common shares outstanding - basic (in shares)	38,239,130	38,035,014
Weighted-average common shares outstanding - diluted (in shares)	38,846,906	38,038,674
Earnings per common share – basic (in dollars per share)	$ 0.23	$ 0.15
Earnings per common share – diluted (in dollars per share)	$ 0.23	$ 0.15
RSUs
Shares:
Effect of dilutive securities (in shares)	26,242	3,477
Stock options
Shares:
Effect of dilutive securities (in shares)	573,770	183
RSAs
Shares:
Effect of dilutive securities (in shares)	2,574	0
PSUs
Shares:
Effect of dilutive securities (in shares)	5,190	0